How do you get babies get used to sippy cups?

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I've run into a discussion here in mylot about weaning babies from feeding bottles. And there were a lot of responses says that they should be off the bottles by 1 year old. My baby's is turning 11 months soon and I wanna start training her to get used to sippy cups. She's been drinking water from since a couple of months ago, but I've attempted to give her milk from it, but she just won't drink from it no matter how hungry she is. I bought two kinds one with silicon spout and one with the regular one. I wanna know from mom's here, how did you make them get used to it. Please help me.